Valve structure



May 23, 1933. J. F. wERDER VALVE STRUCTURE Filedaan. 2. 1931 INVENTOR Jbnmr /f MJ A M,

Y B wm. W Wm.

my IMI, i

A TTORNEY5 v Il Patented May `23, 1933 y.UNITED STATES PATENT OFFICE .vomi r. wmna, or Laxnwoon, omo

' vALvn s'rnuc'ruaa Anuman ma nanna, m1. serial no. 50u44.

This invention relatesto the art of valve other Huid.

, to, in which the several parts may be con Althou h the present form of invention is especia 1y adapted for use in applying lubricant to an automobile or other machines, yet it is to be understood that the structure herein set forth may be emplo ed for dispensing other forms of Huid, eit ergas or liquid, and that it may be ut to any other use of which it is capable. t is tobe understood also, that the present disclosure 'is merely for pur oses of illustration and that other modifications and variations might be devised without departing from the spirit of the present invention as herein set-forth and claimed. f

-One object is to devise an improved form of valve structure of the type above referred venien'tly and eciently assembled or dis-asu sembled and which are so constructed and arranged as to co-operate in an emcient manner.

A more specic object consists in devising such a valve structure in which the valve is so located and o erated that uniform discharge pressure o the fluid may be obtained at f all times during open position oi' the valve.

vburther object is to devise a conveniently operable means for varying the degree to which the valve ma beopened and also to render the entire va ve structure operable with a minimum de ree ot wear upon the parts and substantiay prooi against damage.

Another object consists in devising a supplemental means tor locking the valve in closed A position and for ensuring edective seatingengagement of the valve.

@ther objects Will appear from the following description and c aims `when considered together'vvith the accompanying drawing.

' body.

-Fig ylis a side elevation of the resent valve structure; Fig. 2 is a front en elevation thereof; Fig. 3 is a View taken 'on line 3 3 of Fig. 2; and Fig. 4 is a view taken on line4-4ofFi.1.

The casing ody of the device has the front end portion 1 thereof bored-out vso as to form the valve chamber 2 into the one end of which is screwed the apertured plug 3. The aperture 3a which extends throu h the plug 3 for discharge of the "fluid, is a aptedto be closed by theconical end ortion 4 which constitutes the valve upon t e end of the valve stem 5. The valve seat about the inner end of the aperture 3Il is formed as an edge for line Contact with the conical surface of the valve member 4. The valve seat member 3 and the valve member 4K may either one or both consist of semi-soft metal capable of deformation so as to insure an effective seatingengagement.. f

In the rearward portion of the chamber 2, there is provided a shoulder `6 against which rests the annular disk 7 for abutting engagement, upon one side thereof, Vof the. coil spring 8 which surrounds the'valve stem 5 and which at its other end abuts the. annular member. 9 maintained upon the valve stem 5 by means of the ring 9EL seated in a suitably formed groove about the valve stem 5. 'llhe spring 8 normally forces the valve stem iorvvard y for closing engagement oi the valve member l with the valve seat. The other side oi the annular member 7 is engaged by the one end of the coil spring l0 which engages at its other end the annular member ll upon the opposite side of which is arranged the packing 12. 'lhe inter-engaging suriaces between the annular member ll and the packin l2 are inclined, as indicated in Fig. d i the spring 10' which surrounds the valve stern 5 serves asa means ol maintaining the packing l2 in edective engagement at alltimes about the valve stem at the point where it extends through the rear end of the bored-out portion 1 of the casing At a point just in front ci the annular member 7, the side Wall oli the chambered or bored-out portion 1 ot the casing body is ldd casing body rearwardly thereof and througlh t e the openin 14 between the under-side of body and t e clevis form of trigger 15 which is pivot'ally mounted at the points 16 upon the casing body of the device for the operation of the valve in a manner to be explained. The tube 13 is also firmly secured to the under side of the casing body, as for instance, by means of solder at the point 17 so as to prevent accidental dislodgment thereof. This tube isfurther rotected by means of the hand grip 18 w ich extends angularly and downwardly froml the rear end portion of the casing body. The tube ma extend through an opening in the up r en of the hand grip or may be latera ly placed in position within a cut-out ortion to which solder may then be applie at the' same time as it is a plied at the point'17. The solder which li ls the cut-out rtion for maintaining the tube in such position is indicated by reference numeral 17. The hand grip comprises the oppositely disposed portions between which the tube extends. The tube 13 is soldered at 19 to the lower end of the hand-grip andv has communication therethrough. A threaded connection 20 is secured to the outer lower end of the hand grip for attachment of the usual form of hose or tube for communication with the tube 13. l

The rear end ortion 5 of the valve stem which extends ongitudinally through the casing body, is shielded by the upper and lower walls 21 and 22 of the rear portion thereof. The rear end portion ofthe casing bodyis otherwise open, that is, upon thetwo sides thereof, to facilitate inspection and assembly or dis-assembly of the parts at this point. The coil spring 23 surrounds this portion of the valve stem and has abutment at its rear end against the annular disk 24 which engages the rin 25 seated in an an`v nular oove in the va ve stem. The other end o the s ring 23 engages the annular ring -26 whic -freely surrounds the valve stem and against which the cam portions 27 on the two arms 15' ofthe trigger 15are ada ted to engage uppnthe opposite sides of t e valve stem. hus, rearward movement of the trigger 15 will cause compres.-

lsionof the spring 23 so as to'force the valve stem rearwardl or toward .the right, as viewed in the rawing, so as to open the valve 4 with compression of the spring l8.

Release of the trig er 15 will rmit the spring 8 to return e valve to-c osed ition. The pir-.pose of spring 23 wi beunderstood m the following description."

Extendingthrough the-rear end 28 of the casing body is the screw-threaded member 29 having the kuur-led head 30 for manipulation thereof. Screw-threaded enga ement of this member permits the same to adjusted toward and from the rear end of the valve stem with respect to which it is arranged co-axially. The position of the member 29 determines the extent to which the valve stem may be moved rearwardly andv thereby determines the extent to whic the valvel 4 may be opened. Regardless of the degree of opening permitted for the valve 4, the trigger 15 may always be actuated to the same full extent by the index finger by virtue of compression of the s ring 23 after the valve stem has enga e the member 29. The spring 31 surroun ing the member 29 and arranged between the head 30 thereof and the outer surface of the end portion 28 of the 'casing body will serve to maintain the member 29 in position to which it is adjusted. Upon extreme adjustment of the screw-threadedmember 29 forwardly so as to firmly enga e the rear end of the valve stem when the trigger 15'is in idle position, the valve 4 may thereby be positively locked in closed position so as to prevent accidental ojpnin of the valve during periods of time w en t ere is no occasion or desire for operation of the device. It will be observed that the member 29 and the head 30 are so arranged with respect to the hand grip 18 that the head 30 may be conveniently enga d and manipulated by the thumb and in ex n er of the same hand which engages the and grip 18 and While the device is held in the hand of the operator. The upper portion 18Bl of the hand grip 18 is so formed and arranged with respect to the head 30 that it will guard the same against accidental enga ement by the hand of the operator upon t e lower side thereof. It will be .observed also that the handgrip 18 is providedl with the projection 18b so as to rovide comfortable engagement of the ront part of the'hand grip by the three fingers of the hand. Also, at a what to the rear of the middle o the casing body-and upon the top thereof,fI have provided the eye 32 by which the device may -be conveniently supported in suspended po- 'sition upon .a hook or the like.

The entire main body portion of the device is herein disclosed, including that portion referred tol as the. forward tubular portion 1, the rearwardly extending portions 21 and 22, and the hand grip portions, may be formed as a one-piece casting of suitable metal with which also the eye member 32 may be cast as an integral part thereof. It

will be observedv also that in -the present structure, only'the front end portion thereofl need be bored-out as` a chamber, while the oint somerear end portion thereofis open so as to permit constant inspection as well asfconvenient access thereto. It is to be understood, however, that the front end portion 1, instead of being formed as a bored-out casting integral with the remainingportion of the casting body, may be formed as a separate part either as a tube or turned stock with a suitable form of connection to the remaining portion of the device. Also, the for-v ward end of the tube 13 may be connected in a suitable manner to such modified form of tubing or turned stock as for instance, by means of a screw thread engagement as a substitute for the soldered connection herein disclosed. Likewise, the soldered connection 19 may also be eliminated by extending the tubing 13 through an opening in the bottom end portion of the hand grip 18 and connecting the same in any suitable manner to the main supply tube at a point below and outside of the hand grip. There might also be other variations or modifications of the present disclosure, all of which are intended to be comprehended by the present invention as herein set forth and claimed.

In the Vpresent device, there is involved but a single valve for controlling the flow of fluid therethrough and this valve is locatedat the very extreme forward end of the device. In this way, there is avoided the accumulation of any of the Huid under excessive pressure which might otherwise Aresult in an unusual force Vof discharge upon the initial opening of the valve. With the present form of ldevice, there is insured a fluid discharge with constant predetermined force throughout the entire period when the valve is open.

The only regulation of this device is effected at a single point: namely, at the point of the single valve at the front end of the device, and effective seating engagement of this valve with its seat is insured by virtue o f the line contact between the semi-soft metal of the conical valve member and its seat and also by the edect of the extreme adjustment of member 29 which will serve to form an effective seat for the valve, without danger of leaking.

It will be observed that all of the springs in the present construction are locatedabout the same longitudinal axis and are all arranged in a most compact and convenient manner with suitable means ,of safe-guarding the same against injury or dislodgment thereof. Also, the engagement of the cam shoulders of the trigcferagainst the opposite sides of the freelny arranged disk will automatically cause the disk to creep about the axis of the valve stem and to thereb wear uniformly thereabout as it is repeate ly engaged by the trigger.

The packing provided in the rear endl of the valve chamber with the automatically seating engagement thereof, insures at al1 times a' roperl sealed connection at this point. lso, t at portion of the device which must be air tight is in the present case reduced practically to a minimum, `thereby -facilitating the manufacture of such `a device and serving also to lessen the danger of leaking from the chamber.

. The tubi-ng is afforded protection by being extended along the underside of the main body of the device and by being attached thereto, and Without having to be unduly exposed at an'y point especially in the region of the trigger. In fact, all parts of the device are protected in an eilicient manner, as above explained, and they are all arranged in an extremely compact form. The entire device is highly dependable in its operation and it is not apt to get out of order.

It is to be understood that this device might be employed not only for the discharge of gas or liquid therefrom in a fine stream or spray dispensing any fluid in any degree of flow; and by means of a suitable form of connection uponthe discharge end thereof, this device might for instance be employed also for the supply of air to the inside of an automobile tire or other such device. Any and all such adaptations of the structural but it is adapted'also for f features and combinations as herein disfor having a stem, adjustable means mounted in the casing for determining the extent of opening of the valve, and means including a yieldable connection with the stem for opening the valve, whereby the said valve-opening means may be manipulated t0 a constant degree for all degrees of opening of the valve.

2. A valve structure comprising a valve casing having a valve opening, a valve therefor having a stem, a coil spring surrounding said stem for normally closing the same, means including a spring surrounding said stem for opening the valve, and means adjustably mounted in the casing for determining the extent of opening of the valve, said parts being so constructed and arranged that said last-named spring will absorb any movement of the opening means beyond the extent of opening allowed for the valve according to the position of said adjusting means. v

3. A valve structure of the pistol-grip type, comprising a casing body having a singlevvalve opening at one end thereof, a valve therefor having a stem extending through said casing; means for normally closing the valve, a and-grip portion upon there y against accidental engagement by the hand of the operator upon the lower s ide thereof, and means of supply communication through said casing body tosaid valve opening. l

4. 'A valve structure of the pistol-grip type, comprising a casing body havin a single valve opening at one endthereo a valve therefor having a single, continuous stem extending through said casing body, means for normallyclosing the valve, a hand-grip portion upon the rear end portion of said body, a finger trigger member associated therewith and having cam enga ement with said stem for opening the va ve, adjustable means mounted` in said bod for (zo-operation with said stem so as to etermine thelextent of opening of said valve, and means of supply communication through said casing body to said valve openg3. A valve structure comprising a valve casing in'ember having a valve opening with a circular edge surrounding the mouth of said opening, a valve member of conical form adapted to seat upon the edge of said valve opening forline-contact therebetween at least one of said members bein formed o semi-soft metal adapted to be eformed so as to assure effective seating engagement between said valve and valve opening, a stem for said valve, and an adjustable screw threaded means adapted foren agement by said stem, whereby the extent o opening of said valve may be limited and said adjustable means may cause sufiicient engagement of the valve with the edge of the'valve opening to produce an edective seat therefor, and means for manipulating said valve stem for operation of said valve.

6. A valve structure of the pistol-grip type, comprising a. casing body Ahaving a chamber at one end portion thereof and a l valve opening in the outer end of said chamber, a valve for said opening, a valve stem extending through said chamber, a coil spring located within said chamber and surrounding said stem for normally closing said valve, the rear portion of said body beingv open, said valve stem extending into said openportion of the body, said body having a hand-grip portion in the rear part thereof, a finger trigger member mounted upon said body substantially midway of the length thereof, and a coil spring surrounding said extended portion of the valve stem said valve, the rear portion of said body being open, said valve stem extending into said open .portion of the body, packing means within said chamber at the point of extension of said valve stem through the rear end of said chamber, a coil spring surrounding said valve stem and having o erative seating engagement with said pac ing, said body having a hand-grip portion in the rear part thereof, a finger trigger member mounted upon said body substantially midway of the length thereof, and a coil spring surrounding said extended portion of the valve stem and adapted to serve as a yielding operating connection between said trigger and valve stem.

8. A valve structure 'of the. pistol-grip t pe, comprising a casing body having a cliamber and a valve opening at one end portion thereof, the other end portion of said body being o n with protecting walls extending along t e opposite sides thereof, a valve within said chamber for closing said opening, a valve stem extending through said chamber and into said open portion, a`

supply tube having communication with said chamber, said bod portion at the rear tliiereof;v and a finger trigger member mounted upon said body and having operative connection with said valve stem in said open portion.

v9. A valve structure of the pistol-grip type,fcomprising ya casing body having a chamber and a valve opening at one end portion thereof, the other end portion of said body being open with protecting walls extending' along the' opposite sides thereof, a valve Within lsaid chamber for closing saidA opening, a valve stem extending through said chamber and into said open portion, a supply tube having communication with said chamber, said bod having a hand-grip portion at the rear tliiereof, and a finger trigger member mounted upon said body and .having operative connection with said valve stem in said open portion, said supply.` tube extending along one of said protecting walls and through an opening in said trigger, whereby said tube is afforded protection against distortion.

10. A valve structure of the pistol-grip type, comprising a casing body having a valve chamber at olie end portion thereof,

said chamber having a valve opening, a

having a hand-grip valve therefor, a valve stem, a hand-gri at the rear end of said body and exten ing angularly therefrom, a finger trigger' member mounted upon said body for operation of said valve stem, means providin fluid communication for said chamber, an a suspension means provided u on the one side of said body opposite to said hand-grip, said opposite side of said body being otherwise substantially free of projections.

11. A valve -structure of the pistol-grip type, comprising a casing bod having a valve chamber at one end portion thereof, said chamber having a valve opening, a

l5 valve therefor, a valve stem, a hand-gri at the rear end of said body and extending angularly therefrom, a finger trigger member mounted upon said body for operation of said valve stem, a passa e communicat- I ing with -said chamber, an an adjustable means at the rear end of said body for determining the extent of opening movement of said valve stem, said adjustable means being so located with respect to said handgrip that it can be manipulated bythe thumb and index finger while holding said handrip in the remaining portion of the same and,

In witness whereof, I hereby' aix my signature.

JOHN F. WERDER. 

